Abstract: A heating plant (10) for performs (20), comprises:—at least one tunnel (3, 3?) for the passage of a plurality of preforms (20)—a plurality of infrared radiation lamps (6) along the tunnel (3, 3?);—forced ventilation means (2) for generating a ventilating air flow (F2, F3) through the tunnel (3, 3?),—at least one recirculation channel (15, 15?) arranged to receive the ventilating air flow (F2, F3) exiting from the tunnel (3, 3?),—a mixing member (30), including a first inlet (31) for ambient air, a second inlet (32) for the ventilating air (F2, F3) and at least one mixed air flow outlet (F1), in which the mixing member (30) is shaped and arranged so as to convey the mixed air flow (F1) towards the forced ventilation means (2),—at least one mobile shutter (35) for regulating the degree of opening of the inlets (31, 32),—a hot air source (40);—flow means (45) for conveying the hot air from the source (40) towards the mixing member (30).

Abstract: A heated blow mold for the thermostabilizing treatment, or the heat-set process, where at least a heating system is housed between the mold (2) and mold holder (3). Said system consists of a set of tubular electric resistors, which are parallel to the generator of the mold and of the item to be molded, connected to each other by additional electric resistors, which are basically transversal in relation to the first resistors and placed in areas requiring greater heat.

Abstract: An apparatus for blow moulding of bottles in plastic material comprising a rotating turntable provided with moulds (4) on its outer circumference. Each mould (4) has three moulding forms (5, 6, 7) that can be controlled separately during the parison blowing operations so as not to blow those forms that may not have been supplied with parisons (12).

Abstract: An apparatus for blow moulding of bottles in plastic material comprising a rotating turntable provided with moulds (4) on its outer circumference. Each mould (4) has three moulding forms (5, 6, 7) that can be controlled separately during the parison blowing operations so as not to blow those forms that may not have been supplied with parisons (12).

Abstract: A heated blow mould for the thermostabilizing treatment, or the heat-set process, where at least a heating system is housed between the mould (2) and mould holder (3). Said system consists of a set of tubular electric resistors, which are parallel to the generator of the mould and of the item to be moulded, connected to each other by additional electric resistors, which are basically transversal in relation to the first resistors and placed in areas requiring greater heat.